(vasep.com.vn) Since May 18th 2012, the Ministry of Health, Labour and Welfare of Japan has tested Ethoxyquin residue -an anti-oxidant substance popularly used in preserving food as apples, chilies, fruits, animal feed and aquatic feed, on 30 percent of shrimp consignments originated from Vietnam with maximum residue limits (MRLs) of 0.01 ppm.